Egyptian protesters pose next to a police vehicle set afire during clashes outside the presidential palace in Cairo on Friday, April 26, 2013. Dozens of mostly masked protesters hurled stones and firebombs in clashes with riot police. Protests have become a weekly routine in Egypt, as the country has plunged in turmoil during most of the past two years since the 2011 uprising that ousted longtime President Hosni Mubarak. (AP Photo/Hussein Tallal)
Muslim Brotherhood and Egyptian President Morsi supporters chant slogans during a funeral of three victims who were killed during Wednesday's clashes outside Al-Azhar mosque, the highest Islamic Sunni institution, Friday, Dec. 7, 2012. During the funeral, thousands Islamist mourners chanted, "with blood and soul, we redeem Islam," pumping their fists in the air. "Egypt is Islamic, it will not be secular, it will not be liberal," they chanted as they walked in a funeral procession that filled streets around Al-Azhar mosque. Thousands of Egyptians took to the streets after Friday midday prayers in rival rallies and marches across Cairo, as the standoff deepened over what opponents call the Islamist president's power grab, raising the specter of more violence. (AP Photo/Hassan Ammar)
** FILE ** Egyptian Muslims shout Islamic slogans during a rally in Tahrir Square in Cairo, Egypt, Friday, Nov. 9, 2012.
** FILE ** Egyptian Muslims shout Islamic slogans during a rally in Tahrir Square in Cairo, Egypt, Friday, Nov. 9, 2012.
** FILE ** Egyptian President Mohammed Morsi holds a news conference with at the Presidential palace in Cairo, Egypt, Feb. 13, 2012. (AP Photo/Maya Alleruzzo, File)
** FILE ** Tourists ride in horse-drawn carriages past one of the Great Pyramids in Giza, Egypt, on Wednesday, Dec. 12, 2012. (AP Photo/Petr David Josek)
** FILE ** Egyptian President Mohammed Morsi holds a news conference with at the Presidential palace in Cairo, Egypt, Feb. 13, 2012. (AP Photo/Maya Alleruzzo, File)
** FILE ** Egyptian President Mohammed Morsi holds a news conference with at the Presidential palace in Cairo, Egypt, Feb. 13, 2012. (AP Photo/Maya Alleruzzo, File)
Anne W. Patterson, U.S. ambassador to Egypt, apologized to Egyptian President Mohammed Morsi over a Twitter link to a joke by comedian Jon Stewart the president didn't appreciate. (Associated Press)
